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r SG 1 D� a��y SITE HEALTH AND SAFETY PLAN COLOR SPOT FACILITY 5400 EAST HARNEY LANE LODI, CALIFORNIA Prepared by ;'tao?, Gardner & Dunne, Inc. , May 1988 l.0 PURPOSE The purpose of this dor-.::a.:nt is to provide for worker and environ- mental health and safety during a site assessment to be conducted at the Color Spot facility located in Lodi, California. 2.0 SITE HISTORY On February 28, and March 1, 1989, a 4,000-gallon capacity underground diesel fuel storage tank (UST) was removed from the subject facility under permits issued by the San Joaquin County Fire Department and the San Joaqin Local Health District, Environmental Health Division (EHD), under the supervision of the EHD inspector (Mr. Harlin Knoll), and a Staal, Gardner & Dunne, Inc. (EGD), Environmental Engineer. As the soils surrounding the UST were removed, they were monitored with a photoionization detector (PTD) for volatile organic vapor concentrations. The soils were segregated into contaminated (greater than 30 parts per million [ppm]) and uncontaminated portions based on PID monitoring - a results. Ibe soils surrounding the south end of. the UST (where the fill port, vent line, and product delivery line were located) were observed to be stained gray and emitted a petroliferous odor. These soils also exhibited volatile organic vapor concentrations ranging from 50 to 200 ppm. Upon removal, the UST was inspected and appeared to be structurally sound. The contamination observed was likely caused by overfilling or pipeline leakage. After the UST was removed, two small trenches were dug, 3 feet into the bottom of the excavation (total depth of about 12 feet) and the soils from the trench bottoms were monitored with a PED (1,089 ppm on the south end and 26 ppm on the north end) and sampled. The area surrounding the UST excavation is shown on the attached Figure 1 - UST - Excavation Plan. F